Electrical System Problems of Audi Q5 - part 2

A coil that is attached underneath the sunroof is attached to the bcm. There is not a drain plug at the end so there was 5 inches of water there and the bcm was made to sit in that spot. The electrical wires and bcm were burned out because of this. The bcm controls the entire system not limited to the start button and everything that runs the car. I have only had the vehicle less than 1 year and it costs 4000 dollars to fix. My car has been at the dealership since June 9th.

See all problems of the 2018 Audi Q5 🔎.

Bcm.

My vehicle spontaneously began displaying emergency signals including engine malfunction, turn signal malfunction, parking brake malfunction, brake light malfunction. I would also turn the car completely off and brake lights would remain on asymetrically. Also, the related alert bells would go off intermittently. I have kept my car in good repair and on a regular maintanence schedule. I took the car first to my mechanic who evaluated and said I should take to the Audi dealership. After two days of diagnosis, they came back that the sunroof drains were clogged with debris which definitively caused water to enter and soak the "comfort module" after irrigating them, they did not find any damage and said they do not need replacement. However, the water soaked and heavily corroded the comfort module and say the entire module needs to be replaced along with a rebuild of the harness. They are quoting me $12,300. My safety was at risk in the malfunction of the engine system, and especially signalling capabilities and possible brake impact. The problem has been confirmed by two mechanics - mine and Audi I searched online and have discovered a number of other 2018 Audi Q5 owner accounts of the same and similar defect and result. [xxx] [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Turns out numerous complaints about water finding its way onto the computer comfort module. It is well known. Audi techs admitted it is due a bad design by Audi. There are no indications or warnings something is going wrong. Module gets fried and vehicle shuts off. Can't even shift or take out of park. Insurances do not want to cover due it being water related. Audi does not want to repair due to no recall. They want approx $10,000. 00 per occurrence when this happens. Definitely not fair to consumers to have to pay this or total their vehicles. My car only has 50k miles.

Virtual dashboard where speedometer and safety warning are displayed has stopped working. Display has completely shut down. I cannot see any critical information to drive vehicle. I contacted the dealership to address a serious safety concern that mirrors an issue already under active recall for other models by the manufacturer. Despite this, the dealership has refused to perform any inspection or repairs, stating that my specific model is not currently included in the recall—even though the symptoms and risks are identical. This refusal raises significant concerns, as it leaves a known safety issue unaddressed solely due to recall limitations that may not yet reflect the full scope of the problem. In order to receive any resolution, the dealership is asking to cover diagnostic and service costs for the safety issue.

See all problems of the 2021 Audi Q5 🔎.

We have a leased 2023 Audi Q5 that has been to the Audi service department twice so far to determine the source of the problem with our sos sensor, which turns on randomly and now stays on and won't turn off. The first time, on April 23rd, Audi service did not address the issue because they forgot to. The second time, on April 29th, the Audi service rep, kyle blomberg, reported that the sos sensor issue may be fixed with a software update coming out later this year. He will speak with the service foreman today for more information. This is a safety issue if the car is ever in an accident, as we are not sure if the airbags will deploy, whether the seat belt tension will be activated, or whether the ecall system will automatically contact emergency services. It's unacceptable for Audi not to deploy an update more expeditiously, as waiting nearly seven months is entirely ludicrous. Please investigate this further.

See all problems of the 2023 Audi Q5 🔎.

Water seeped into comfort control module via blocked sunroof drain hoses and damaged electrical. There was a recall for the same issue regading the gateway control module which allows shops to add a protective cover. This same recall needs to be on the comfort control module since the way they designed the sunroof drains allows for water to seep into the cc module. This is a ridiculous design that requires a 11k dollar repair for customers.

During a rain storm a water egress issue damaged my comfort control module. An issue identified for many Audi Q5 vehicles; however my VIN for some reason is not showing this recall. It appears the recall may need to be expanded.

See all problems of the 2019 Audi Q5 🔎.

The rear view camera is not operating when shifting to reverse. I can demonstrate this malfunction at any time to anyone. Driver is unable to detect short objects or small children directly behind the vehicle. The problem was confirmed by the dealer during a service visit. At that time, the service technician checked power and ground to the control unit and verified good. Attempted calibration for camera, vehicle would not calibrate. The vehicle has not been inspected by any other agencies. There were no warning messages, or lamps or any other symptoms prior to the failure.

The instrument panel cluster assembly (screen behind steering wheel) needed to be replaced because it would intermittently stop working and I had no idea of how fast I was going, what gear I was in, how much fuel I had or whether the lane assist and other safety features were working. Without knowing speed, I may have followed cars too closely to safely stop or I could have run out of gas and left stranded somewhere. I thought it might have been software updates occurring but after a few days, I went to the dealer for service. Audi naples was able to detect fault, replicate problem and replaced the assembly on 4/10/2025 for $3,391. 96. The dealer kept the part and told me to keep my receipt in case there is a recall. My car currently has 31,489 miles and had a total inspection and was last serviced on 1/22/2025 with 31,487 miles. I find it outrageous that a part like that would fail in such a short period of time. I was lucky I wasn't on a long trip away from home when it occurred.

Rear driver side door will not unlock when keypad, nor inside unlock button is pressed. Once inside, door will not unlock in sequence with other doors when vehicle is shut off and it is time to exit the vehicle.

See all problems of the 2011 Audi Q5 🔎.

It has been very cold here in the north east. Under freezing for more than a month. My door lock sensors stopped working about 4-5 weeks ago. Two days ago I was driving and the power steering stopped working. Then after about 2 days it began working again. Just as the temps went above freezing. And the door lock sensors started working again. I had noticed over the last month or so that papers I had behind the front seat when I went to retrieve them were very wet, soaked. I took my car to my mechanic today and he told me that the computer is under the front seat. And water in this area may be causing the failure of the power steering and the door locks. So he said I should report it to you and you could possibly help.

See all problems of the 2014 Audi Q5 🔎.

Water intrusion from sunroof floods electronics modules and shorting out, making the car unoperable.

2018 Audi Q5 comfort system control module is faulty due to corrosion from water and or humidity. No incidents have occurred with my vehicle that has less than 70k miles. I purchased the vehicle as a certified pre-owned with 7700 miles on the car. The dealership claims that outside forces have cause the module to corrode and that I am responsible for the 10k payment to replace and/or repair.

Audi Q5 shows no recalls on my vehicle. My car stops randomly while driving even while being on highways and interstates. As well as the passenger side leaking due to sunroof drainage coming to the inside (which may affect the air bags). This car has not had any repairs on recalls that I know of personally.

While driving, the steering wheel suddenly locked up and could not be turned. Several warning lights simultaneously appeared on the dashboard including: "steering malfunction! please stop vehicle", "Audi adaptive light malfunction! see owners manual", "start/stop system malfunction! function unavailable", and "Audi pre sense currently limited" - no warning lights were present prior to this event. The sudden loss of steering could have caused serious injury to myself and to other drivers or pedestrians nearby. I was thankfully able to stop the vehicle, but I could not pull over because the steering wheel could not be turned. The car was towed to the Audi dealership and I was told the "electronic power steering rack" would need to be replaced costing nearly $5,000. 00.

Gateway control module shutdown. After a rain storm vehicle had electrical issues such as rear light turning off, and engine start malfunction alarm on dashboard. To vehicle automatically stoping with no vehicle nearby, seat belt tightening and to engine seized while driving to the dealer for the “engine start malfunction alarm”. The Audi dealer is quoting us $17,000 to repair for damages. Multiple people on this post have also had this issue with one going on 4 months waiting for parts to repair this issue.

A recall notice was sent on November 2024 informing us that the vehicle's high-voltage battery modules may experience a thermal overload possibly resulting in smoke or fire. In addition, we were notified that a defective high-voltage battery cell modules may overheat, increasing the risk of a fire. The recall notice indicated to contact the manufacturer, Audi, to remedy the recall. We contacted Audi multiple times starting on November 2024 for the manufacture to remedy this safety recall. We have yet to receive any information as to the timeframe to remedy the recall or have had Audi reach out setting an appointment for diagnostics or replacement of the defective battery. We have been concern for the safety of ourselves and the vehicle given the current recall.

See all problems of the 2022 Audi Q5 🔎.

The Audi Q5 sunroof drain that is intended to keep water out of the vehicle, leaked where water collected and pooled in the car beneath the car liner. The water collected on the "comfort module" and electrical fuse box resulting in immediate electrical failure of several vehicle features/systems including brake lights, turn signals, reverse lights, windshield wipers, etc. To name a few. In addition to repairs in excess of $10k, the vehicle will be totaled by the insurance company. After an exhaustive search, several Audi users of the same make, model and year have faced a similar issue. This issue must be addressed by Audi and should be reviewed immediately.

Roof drains clogged resulting in water filling the interior left rear wheelwell where ligting control modules are stored and are not waterproofed. Design defect allowing water incursion into an electrical connection system that is not waterproofed resulted in sudden and immediate multiple lighting system failure, road hazard.

2018 Audi Q5 (2. 0, 40k miles, excellent condition) experienced severe electronic failure, due to sunroof drainage lines depositing water into the rear side wells where sensitive electronics are housed, impacting all tail-lights, wipers, sensors, internal dashboard sensors, etc. , rendering the car highly unsafe and undrivable. The issue is a design and manufacturer defect that has allowed rainwater to leak into the rear side compartments destroying sensitive electronics & wiring, from faulty/kinked drain lines in the sunroof (according to the Audi technician from my local Audi store), rendering the vehicle undrivable. It was obvious, repeatable, and avoidable. Worse this issue was misdiagnosed by the same Audi store, causing extra parts & labor expenses that didn't solve anything. It took my Audi store over a month to diagnose the issue correctly. There were also significant investigative/diagnostic charges from my Audi dealership. There were also significant repair expenses to replace all water-logged equipment, including the electronics control unit (ecu). This should be a clear recall item.

My car cut off while I was driving [xxx]. My family including my [xxx] was in the car when the car shut off mid drive. No warning nothing. Power was on but the steering wheel locked and the brake pedal was firm. I could not switch gears nothing. It's a Sunday so I had the car towed to my home. 10/7 I have the car towed to bell Audi in edison NJ and was told it's my alternator. I work from home, I barely drive 10 miles a week. I use my car to pick my daughter up from school which is close to home. I have researched and found this is a common issue with Audi cars that are not old. At 13k miles I should not have this issue. We could've died on the highway as that is where I was heading towards. I checked my VIN and found this is a common issue which is not acceptable as we almost died in the car as it stopped short and scared all of us and locked up. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The comfort control module in the trunk of the car was sitting in water due to an ingress of water coming in the car. The car would not start due to this water ingress and could have shut off completely on the freeway or while driving. This caused my car to completely shut off and malfunction. There were no warning lamps or messages of the problem. I found out about the problem by taking the car to the Audi dealership. They originally thought the problem was the gateway module which has already been recalled due to the same problem of an ingress of water. The Audi dealership has claimed that the ingress of water is from a clogged drain pipe in the sunroof. They said there is nothing you can do to prevent this from happening.

The contact owns a 2018 Audi Q5. The contact stated while driving 30 mph, several unknown warning lights illuminated. Additionally, the turn signals were inoperable. The contact pulled over and noticed that the rear lights including brake lights and turn signals were not operational. The vehicle was taken to the dealer where the cause was diagnosed as a sunroof drain line leakage that caused electrical damage due to water build up, that damaged the control module. The contact stated that the drain lines need to be unclogged and the control module needed to be replaced. The contact stated that the vehicle was at the dealer awaiting the repairs. The contact was concerned that the owner’s manual did not provide guidance on sunroof maintenance to prevent the failure. The contact opened the rear hatch and found water accumulation under the mat. The manufacturer was not made aware of the failure. The approximate failure mileage was 85,000.

Starter button does not work. Use of emergency start only. Dealership says rain water running off car towards the back, gets into the wiring and causes massive damage. Getting a bill of over $11,000 there are recalls on this for other Q5 years but not 2018.

The contact owns a 2018 Audi Q5. The contact stated that while driving at an undisclosed speed at night, upon reaching the destination, the contact became aware that the headlights would not turn off. After which, the vehicle failed to restart, and the vehicle was towed. The check engine warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA campaign number: 21v947000 (electrical system, structure); the VIN was included, but the vehicle had already been repaired under the recall. The manufacturer was notified of the failure but provided no assistance. The failure mileage was unknown.

Tpms (tire pressure monitoring) erroneously lights up, hence, incorrectly disabling all the safety driving features of the vehicle. We have already checked this with Audi. Audi has confirmed to us that there is a defect and that they are working on a fix which is due as of sept'2024 (estimated). A pps has been created. This is dangerous as the system disables all safe driving features like abs, traction control etc. . The moment tpms error activates up incorrectly.

Car was left outside for two weeks while we were gone on a trip. When we returned and attempted to start the car numerous warning lights went off related to turn signals, tail lights, engine ignition, key recognition, etc. We were able to drive the car home but the turn signals and tail lights were malfunctioning and the engine would lose power unexpectedly. Upon researching on Audiworld forums I came to learn I should check to see if there was any moisture in certain areas, including the rear fuse box area at the rear of the car. I checked that location and found many inches of water in the fusebox!!! I learned that many, many people with Q5s have had the same problem which is rainwater entering the vehicles electrical system due to non-operable sunroof drain ports. Yes, I searched and found an unrelated recall 90s9 but the dealer said this was not the issue, the issue is non-operable sunroof drains and the repair cost is $8,000. Having no idea of the danger I was placing my family in by driving this vehicle while its electrical system was swamped with water, I feel a class action lawsuit should be brought against the company for damages for material, labor, as well as the risk of injury or death I placed my wife and I in by driving this vehicle under such unsafe conditions. I noted there was a suit settled for this issue with other models, but not the 2018 Q5. [xxx] v Audi/volkswagon [xxx] . The idea that someone should have to face death for leaving their car in the rain does not even pass the laugh test. Someone in Audi's risk management department needs to address this and make owners whole again. Please advise. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

On [xxx] at around 8:55-8:59 I finalized the paperwork for a purchase of a car, received the keys, drove out of the dealership and by 9:02 the check engine light came on and the car shook. On [xxx] at around 2:22 pm, as I was driving, the car shook, pulled up to red light and the car would not move. It shook, rattled and died. The epc light came on. I owed the car back to the dealership. I noticed that parts of the car next to the muffler and the tailpipe were belong held together with making tape. I received a call from the dealership from tony. He said the car was fixed by the owner. No clear verification that the dealership owner is as trained or licensed mechanic. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2016 Audi Q5 🔎.

Sunroof drain lines leaked and filled the rear compartment with water which is also where the body control module is. The water damaged the body control module which affected vehicle lighting and abs system. Upon further investigation, this is a very common issue with Audi.

The dash board lights all came on, windows rolled down, car could not be controlled and couldn’t put the gear in park. After further research on the internet, I found that there was a recall on 288,000 q 5s in 2021 because of this issue. Dealer said the “gateway system” that controls all the communication died and they had to replace it. I think the 2021 issue is not completely resolved.

See all problems of the 2024 Audi Q5 🔎.

On may 3, 2024, while driving to work, the vehicle acutely started to make a loud clicking noise in the engine compartment. I parked the vehicle and looked for a warning light indicator on the dashboard to determine the problem, but no indicator light emerged. I then called Audi omaha and spoke with the service manager who kindly arranged to have my vehicle picked up and a loaner dropped off. I did ask at that time whether it was safe to have somebody drive my vehicle to Audi given the severity of the noise and I was told that since there was not a warning light on the dashboard, it would be ok. I later discovered that my vehicle stalled on the way to Audi omaha and required a tow. On may 6, 2024, I received a report of the problem and the estimate for repairs. It was explained that the head of a spark plug had broken off into the engine causing the piston to make contact with the valve in cylinder 3 resulting in engine damage which was beyond repair. Additionally, a second spark plug had been misfiring for several days. The estimate to replace the engine: $9,282. 03. To my surprise, the multi-point vehicle inspection report I received on the same day reported that everything (aside from rear brake pad wear) passed inspection – including the engine and spark plugs! on may 7, 2024, I called Audi omaha to express my concern that an entire engine would need replaced on a 6-year old luxury vehicle with only 60,000 miles and spark plugs that were replaced at 40,000 miles prior to my purchase of the vehicle. Even more concerning is that no warning light indictor ever displayed on the dashboard (despite being informed that the vehicles computer system had detected changes in the engine compartment 2-days prior to this event). Because of these glaring safety concerns, this issue was escalated to the Audi central region division who declined to provide assistance despite the faulty spark plug and the malfunction of the warning indicator light.

Car was being driven normally within a parking lot of a shopping center. Proceeded to park the vehicle in a parking space. Upon pressing break and holding break pedal pressed, went to push the parking button on gear shifter and car erratically jolted and drove forward and stopped upon impact with barriers/debris/crash. Multiple alerts and warnings illuminated right prior to the incident. Reviews of other drivers of this vehicle reveals similar incidents of unintended acceleration while breaks are actively being applied. No parking button options were stopping vehicle, impact/crash stopped car. Property of shopping plaza/target was damaged, my vehicle, Audi, was damaged and another vehicle parked next to claims their vehicle was involved/hit as well. Safety was critically in danger as breaks did not work and car accelerated on its own without accelerator being pressed rather break was actively engaged and pressing of parking break to shift car from drive to park. Audi pre sense, parking break, tpms and caution symbol alerts displayed. Problems confirmed and reviewed by Audi dealer service. Paperwork is attached along with pictures. Alerts from car has been present for sometime and car has been taken to Audi numerous times with no action by dealer, car is new and is a lease. Audi is aware of these issues had took no action to Audit/fix cars systems. Shortly after those visits to dealers this incident occurred. Believe these control modules having a correlation with cars sporadic behavior. Audi service documents: story: 5354 TSB 2070571/2 duplicated customer concern during the initial test drive. Ran gff with diag id 186214649 found dtc p060c00: internal control module main processor performance. Found TSB 2070571/2. As per TSB "1 clear the dtc p060c00 and return the vehicle to the customer. 2. Explain to the customer that a solution is expected to be available by the end of the 1st quarter of 2024 (subject to change) and that no repairs are necessary at this point.

I got a safety system malfunction! fault. I took it to aan Audi dealer and they said it was an issue with a harness under the passenger seat. Tech notes here references a service bulletin. Air bag occupant sensor - replace | faults present b1225f1 - TSB 2051242/7 -- per TSB apply wiring ties to secure and prevent faults from returning -- not covered under extended warranty policy. Not sure why this isn’t covered under extended warranty or a recall. It basically disables the passenger airbag. I have seen other Audi vehicles with recalls for similar issues with harness under the passenger seat. I think they have a design issue but are wanting to charge me (and probably others) $220 to diagnose and $695 plus tax to put two wire ties on the harness to supposedly fix (or bandaid) a bad harness.

-car shut down (engine off, battery still functioning) while driving. Car went into neutral. -lost power steering and other functions after about 20 seconds of the engine shutting down. -immediate life-threatening danger while driving to us and surrounding drivers and pedestrians -no inspection or police report yet. -the car has not been driven since the incident and so the problem has not been reproduced yet. Upon inspection of the trunk area (2018 Audi Q5), we found about 4 inches of water. This has been attributed to clogged sunroof drains causing water to flow into the trunk and short out electrical components.